In the category of finance, Bob Shiller’s enthusiasm for financial history and his amusement with the limitless quirks and excesses of markets.

Financial markets with Bob Shiller (Yale 2008):

https://youtube.com/playlist?list=PL8F7E2591EE283A2E

Financial markets with Bob Shiller (Yale 2011):

https://youtube.com/playlist?list=PL8FB14A2200B87185

Smart-as-a-whip, scathing rationality of John Geanakoplos in his financial theory course.

Financial Theory with John Geanakoplos (Yale 2011):

https://youtube.com/playlist?list=PLEDC55106E0BA18FC